Head it accurately into the corner. Attack the ball, meet it with the forehead with your eyes open, and direct it firmly into the marked corner.
A feeder lofts the ball and the striker heads it into the marked corner. Emphasise attacking the ball, meeting it with the forehead with the eyes open, and directing it accurately. Vary the corner. Rotate the feeder.
Fork it into your private drills, then change the animation, adjust positions, swap equipment, or drop it into a session block.